National Geographic : 1946 Jun
With Huge "Roman Candles," a Cargo Junk's Crew Pours Fire on Attacking Pirate Craft Gunpowder and wax-covered tow are packed in alternating layers inside the bamboo tubes, which are reinforced with bands of rattan. When the "fireworks" are ignited at the mouth of the tube, a torrent of blazing tow is spewed upon the enemy junk, setting it afire or driving thehelmsman from his post. The pirates themselves are well armed, some with machine guns. Capturing a rich vessel, they loot it on the spot or take it to their lair, unloadthe cargo, and hold the wealthy for ransom.